<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport"
        content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
  <title>首页</title>
</head>
<body>
<h2>Hello World!</h2>
<script>
  console.log(Math.floor(Math.random() * 11)) // 随机数
</script>
</body>
</html>